A CT scan is a type of X-ray that can show cross-sectional images of a specific area of the body. The machine circles the body and sends the images to a computer, where they are viewed by a technician. Each picture is viewed as a cross-section of ...

A computerized tomography scan (CT or CAT scan) is a series of cross-sectional X-ray images of your body. CT scans are used to examine your bones and soft tissues for damage or abnormalities. Often, these images can be combined to create a 3D pict...

An ultrasound scan is a medical test that uses high-frequency sound waves to capture live images from the inside of your body. The technology is similar to that used by sonar and radar, which help the military detect planes and ships. An ultrasoun...

Liver function tests help determine the health of your liver by measuring levels of proteins, enzymes, or bilirubin in your blood. Many tests can be performed on the liver, but most of them do not measure the overall function of the liver. The mos...